Apparatus for treating molten metal.



No. 811,097. PATENTED JAN. 30, 1906. .L s. SEAMAN.

APPARATUS FOR TREATING MOLTEN METAL. APPLICATION FILED MAY 23. 1904.

2 SHBETS-SHEET l.

FIGJ- WH'NE38E8: INVENTOR PATENTED JAN. 30, 1906.

J. S. SEAMAN. APPARATUS FOR TREATING MOLTBN METAL APPLICATION FILED MAY 23. 1904.

R a m m E n v s m w E B H S 2 WITNEB3ES:

purities, from the goo 3, pr tom 0 JOSEPH S. SEAMAN, OF PITTSBURG,

To all whom, it may concern:

Be it known that I, Josnrn S. SEAMAN, a citizen of the United States, residing at Pittsburg, inthe county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Apparatus for Treating Molten Metal, of which improvements the following 1s a specification. The invention described herein relates to certain improvements in apparatus for treat ing and casting metal, and has for its object the separation of slag and other impurities from the good metal as it passes from the ladle or other source of supply to the mold and also during such passage to afford oppor tunity for the escape of gases and for a purifying treatment of the molten metal.

The invention is hereinafter more fully described and claimed.

' In the accompanying drawings, forming a part of this specification, Figure 1 is a sectional elevation of my improved apparatus for purifying metal, and Fig. 2 is a top plan view of the same.

In the practice of my invention I provide suitable means whereby the molten metal as it .comes from the cupola or other source of supply is subjected prior to its entry into the mold to a centrifu al action, whereby the imsuch as s ag, &c., may be separated. d metal and the latter broken up for a short time into small masses or bodies,

so as to provide for the escape of gases.

While many forms or constructions of apparatus may b taining vessel consisting of a shell 5, surrounding the basin at a suitable distance from its periphery and lined with fire-clay or I other refractory material. This ring 5 is ings in small strea supported upon the outer rim of an annular the innerwall of the r e employed my invention, 1 have found that the construction shown in the accompanying draw-. ings is a convenient one for the apparatus. This apparatus consists, primarily, of a basin mounted upon a vertical shaft 2, which can be rotated suitable form or through the medium of a gearing. is provided with peripheral ports or passages eferably arranged adjacent to the botf the vessel for the escape of good molten metal, which is forced out through the P to the metal by the-rotation of the basin. The basin, or at least that portion having the perforated periphery, is inclosed within a re enings by the centr igal action imparted PENNSYLVANIA.

APPARATUS FOR TREATING WIOLTEN METAL.

Specification of Letters Patent.

Application filed May 23, 190 Serial No. 209,311.

basin.

not necessary,

terials.

in the practice of apart, forming ence to F 1g. 2

at the desired speed by any form double d construction of motor This basin metal.

ings.

trough 6, the inne ing within the pla This trough is pro 8, and the trough metal falling therein through the spout. sufficient metal Wi is so suppor is maintained at a f the ports, sl

flow over the top 0 provide a catcl and surrounding bottom of the catchrim 10, which is the upper edge of catch-b asin will preve tering or spreading of overflow from the centr provided with openings metal caught therein. may iiow out.

it is preferred to line this catchb asin with clay or other refractory mabasn While the centrif structed in any suita ably formed of a base adapted to be detacha tical driving-shaft 2. staves or sections 13 ar to the base-plate and ar at their upper ends by staves or sections are pockets or rece ception of staves or sections refractory material, su

' it will be see walls of the met ove fractory staves, w similarly inclined, so curely held in p0 fractory staves, manufacture are formed the radial sition. which for con formed in two sections, are openings for the escape of In using this apparatu is teemed into the centrifugal basin in such quantities as to maintain a dep Patented Jan. 30, 1906.

r rim 7 of such trough bene of the periphery of the vided with a spout ted that the to will flow toward and In using this apparatus ll be poured thereintoso as to maintain a depth of metal therein at least suflicient to cover the ra As the good met above the level 0 impurities will accumulate su f the basin.

ugal basin may be conble manner, it is prefer- -plate'12, having a hub dial openings height ag and other iliciently to I therefore 1 9, having an open top the centrifugal basin.

basin extends under the erably formed around the centrifugal basin. This nt the dangerous scatany metal which may ifugal basin and is 11, through which bly secured to the ver- A series of vertical e formed on or secured e connected together the rim 10. These arranged a distance sses for the re* 14, formed of ch as clay. By refer n that adjacent al staves are inclined so as to tailed recesses for the re hich have their outer walls that they may be se- Through these revenience of s the molten metal th of metal therein suliicient to cover the radial open By the rotation of this basin the metal is forced outwardly through the radial openms, which, striking against ing 5. are further broken up, thus permitting a perfectly free escape for any gases contained in the metal. After striking against the ring 5 the metal will drop down and collect in a mass in the trough and flow thence through the spout into a mold beneath the same or a ladle, whereby the purified metal may be carried into the mold. As the good metal is heavier than the slag or other impurities, it will be mostly subjected to centrifugal action, and will therefore be separated from such impurities by the flowing of the good metal through the radial openings.

As it may at times be desirable to purify the molten metal, as by subjecting it when broken up to the action of the air, nozzles 15, connected to a source of air or gas under pressure, are inserted through the walls of the re taming vessel in such position that the airjets can be forced through the metal while broken up.

I claim herein as my invention 1. An apparatus for treating metal having in combination an open-topped rotatable basin having radial ports or passages in its side wall, a receiving vessel inclosing the 25 basin and provided with a spout and a catchbasin surrounding the upper portion of the separating-basin, substantially as set forth.

2. An apparatus for treating metal having in combination, a basin having removable wall-sections provided with ports orpassages, means for rotating said basin, a receiving vessel surrounding the basin and provided with a spout, substantially as set forth.

3. An apparatus for treating molten metal having in combination a rotatable basin having radial ports or passages, a receiving-reoeptacle surrounding the basin and having an outlet and blast pipes arranged to direct jets of air against the metal in the receptacle, substantially as set forth.

In testimony whereof I have hereunto set my hand.

JOSEPH S. SEAMAN oorr, 

